/Engine/Plugins/Experimental/GeometryScripting/Source/GeometryScriptingCore/Public/GeometryScript/MeshBasicEditFunctions.h
For each transform in AppendTransforms, apply the transform to AppendMesh and then add its geometry to the TargetMesh.
static [UDynamicMesh](API\Runtime\GeometryFramework\UDynamicMesh) * AppendMeshTransformed ( [UDynamicMesh](API\Runtime\GeometryFramework\UDynamicMesh) * TargetMesh, [UDynamicMesh](API\Runtime\GeometryFramework\UDynamicMesh) * AppendMesh, const [TArray](API\Runtime\Core\Containers\TArray)< FTransform > & AppendTransforms, FTransform ConstantTransform, bool bConstantTransformIsRelative, bool bDeferChangeNotifications, [FGeometryScriptAppendMeshOptions](API\Plugins\GeometryScriptingCore\GeometryScript\FGeometryScriptAppendMeshOptions) AppendOptions, [UGeometryScriptDebug](API\Plugins\GeometryScriptingCore\GeometryScript\UGeometryScriptDebug) * Debug )